user_validate_name

Verify the syntax of the given name.

File

modules/user/user.module, line 257

Enables the user registration and login system.

Code

<?php
function user_validate_name($name) {
  if (!strlen($name)) {
    return t('You must enter a username.');
  }
  if (substr($name, 0, 1) == ' ') {
    return t('The username cannot begin with a space.');
  }
  if (substr($name, -1) == ' ') {
    return t('The username cannot end with a space.');
  }
  if (strpos($name, '  ') !== FALSE) {
    return t('The username cannot contain multiple spaces in a row.');
  }
  if (ereg("[^\x80-\xF7 [:alnum:]@_.-]", $name)) {
    return t('The username contains an illegal character.');
  }
  if (preg_match('/[\x{80}-\x{A0}' .          // Non-printable ISO-8859-1 + NBSP
                   '\x{AD}' .                 // Soft-hyphen
                   '\x{2000}-\x{200F}' .      // Various space characters
                   '\x{2028}-\x{202F}' .      // Bidirectional text overrides
                   '\x{205F}-\x{206F}' .      // Various text hinting characters
                   '\x{FEFF}' .               // Byte order mark
                   '\x{FF01}-\x{FF60}' .      // Full-width latin
                   '\x{FFF9}-\x{FFFD}' .      // Replacement characters
                   '\x{0}]/u',                // NULL byte
                   $name)) {
    return t('The username contains an illegal character.');
  }
  if (strpos($name, '@') !== FALSE && !eregi('@([0-9a-z](-?[0-9a-z])*.)+[a-z]{2}([zmuvtg]|fo|me)?$', $name)) {
    return t('The username is not a valid authentication ID.');
  }
  if (strlen($name) > USERNAME_MAX_LENGTH) {
    return t('The username %name is too long: it must be %max characters or less.', array('%name' => $name, '%max' => USERNAME_MAX_LENGTH));
  }
}
?>